运用参数化程序设计语言APDL，引入参数化变量，和判断、循环等流程控制命令，详细说明了梯级参数化模块的开发过程。
Using the parametric programming language APDL, introducing parametric variables, the judge and circulation flow control command, detailing description of steps parameter module development process.
在传统的关系数据库的基础上，提出了一个适用于关键业务开发的基于关系结构的流程控制模型，说明了该模型目前的应用情况。
Based on traditional relationship database system, a relationship-based flow control model was proposed. The application of this relation-based flow control model was explained.
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